Rachel lathered up her body, trying to clean off the last traces of the potion she had spilled on herself, even though she didn't feel any on her when she started. Her body felt unusually warm and comfortable in the heat of the shower. Every inch of her seemed to glow with a pleasant tingle. She lingered a little longer than usual rubbing her hands over her body. While rubbing her chest, she was shocked to notice that her breasts seemed to have become smaller. At first, she thought she was just mistaken, but when she looked down at them they looked like barely more than lumps, not even an A-cup. Then, she noticed that her hands appeared smaller as well, like a child's hands. She looked up to see that the shower head was higher above her than when she had started showering. She shut off the water and quickly stepped out of the shower without bothering to dry herself.
She stood in shock as she stared at herself in the slightly foggy full-length mirror on the door. Staring wide-eyed back at her was the refection of a dripping wet young girl, years younger than her normal age. Her face had rounded out and nose had shrunk, but she recognized her own skinny, younger self staring back at her in the mirror. She estimated that she was only 9 years old, half her normal age. She couldn't have been more than 4'2" tall and weighed less than 60 pounds.
Looking down at herself she noticed how soft and hairless her wet skin was now. Her feet looked cute and tiny and seemed far too close. She had grown accustomed to them being so distant from her head. Everything in the bathroom seemed larger to her. The mirror above the sink was too high for her to see more than the top of her head in it. Looking at the toilet, she realized she might have to hop up to sit on it.
Then, she looked at the door mirror again and waved wearily at her young reflection.
"Didn't expect to see you again," she said in a voice several octaves higher than normal. A light panic struck her. "What am I going to do now?"
She pulled down her towel and wrapped it around her. It felt as large as a blanket to her. She opened the bathroom door, noticing that the knob seemed much higher to her than normal. After running back to the kitchen, she began franticly searching for the potion bottle in the hope that it would offer a clue as to what had happened to her and how to change herself back.